Litokol FastGel S1+: manufacturer image showing the grey and white versions. One sales unit contains 2 bags of 20 kg (40 kg) in the colour you select.
Litokol

Litokol FastGel® S1+ Grigio | Flexible rapid tile adhesive in grey, ready for use after 12 h | 40 kg (2 × 20 kg) for approx. 13.3 m²

€183,00
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  • Walkable after 3 hours
  • Ready for grouting after 3 hours
  • Ready for use after 12 hours
  • Available to order · Delivery time on request
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Litokol · FastGel® S1+ GrigioFlexible rapid adhesive C2 FTE S1 in grey for large formats & underfloor heating

A shop that has to be retiled overnight, a balcony over an old covering, large slabs on underfloor heating: where surfaces need to return to everyday use quickly and the substrate moves, tiling needs speed and reserve at the same time.

FastGel® S1+ is a deformable, crack-resistant tri-polymer gel with quartz microspheres for large formats, natural stone and moving substrates such as underfloor heating; it helps prevent staining on moisture-sensitive stone and combines rapid setting with uncompromising performance.

  • Deformable, class S1
  • For underfloor heating
  • Prevents stone staining
  • Floors & walls to 20 mm
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FastGel® S1+ Grigio is made for these areas

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  • Bathrooms, showers & wet rooms
  • Pools, basins & fountains
  • Terraces & balconies
  • Spa & hammam
  • Tile on tile & underfloor heating
  • Façades
  • Commercial & public areas
  • Industrial floors & heavy-duty areas
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Suitable for these coverings and substrates

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  • Large formats & thin slabs
  • Porcelain stoneware & ceramic tiles
  • Natural stone & marble
  • Terracotta & clinker
  • Screeds & levelling compounds
  • Plaster, plasterboard & aerated concrete
  • Existing tiles & underfloor heating
  • Concrete & fibre cement
  • SafetyGel® & waterproofing
  • Uncoupling membranes
  • Gypsum and anhydrite only with X-Prime® and checked residual moisture, not on wood, metal, PVC or RM waterproofing

Outdoors, in pools, on façades and under heavy loads, lay with full coverage and also coat the back of the tile. Protect freshly tiled surfaces from heavy rain for at least 12 hours. Test natural stone with reinforced or treated backs for compatibility beforehand.

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The key data for application

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Flexible powder gel in 2 bags of 20 kg (40 kg) in grey (Grigio), creamy and stable on floors and walls:

  • Mixing4.6 to 5.2 l water per 20 kg bagleave in the bucket for 5 minutes so everything is wetted, then stir briefly with the mixer at low speed, without adding water
  • Pot life60 minutesmixed adhesive, apply at +5 °C to +35 °C
  • Open timeover 45 minutestime after spreading during which the tiles can be laid
  • Bed thickness1 to 20 mmkeeps its shape on floors and walls without sagging
  • Consumption1.8 to 3.5 kg/m²with 3.5 to 10 mm notch; double buttering approx. 5 kg/m²
  • Shelf life12 monthsstore dry in the original packaging

Performance that lasts

  • −40 to +90 °Ctemperature resistance in service
  • over 35 %share of quartz microspheres reinforcing the adhesive bed
  • C2FTE S1EN 12004: cementitious (C), improved adhesion (2), fast-setting (F), reduced slip (T), extended open time (E), deformable (S1). “S1+” is the product name; the class is S1
  • 2.5–5 mmtransverse deformation above 2.5 and below 5 mm to EN 12002

Coverage and quantity

With an 8 mm notched trowel, 40 kg cover approx. 13.3 m². Coverage mainly depends on the notch size and application.

6 mm notch: approx. 16 m² per 40 kg.

8 mm notch: approx. 13.3 m² per 40 kg.

10 mm notch: approx. 11.4 m² per 40 kg.

With double buttering, i.e. also applied to the back of the tile, 40 kg cover approx. 8 m². Further consumption figures can be found in the technical data sheet.

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Delivery & advice

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Delivery

Availableto order · delivery time on request

Also available in white as FastGel® S1+ Bianco.

Advice

Free of chargepersonal expert advice

Unsure about the substrate, large format or quantity? We will advise you personally on +49 40 22851287 and match adhesive, waterproofing and grout to your project.

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Recommended systems

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The manufacturer: Litokol

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Since its foundation in Rubiera, Italy, in 1968, Litokol has developed systems for laying tiles and natural stone, from substrate preparation, adhesives and waterproofing to grouts and care. New formulations are created in the company’s own research laboratory, Litokol L-Lab.

View reference projects

We are always happy to help and will support your project from the substrate to the last tile, so that your surfaces can be used again quickly.

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Unchanged manufacturer originals; the document language is shown for each file.